:root {
  --green: #2F9E44; --blue: #1971C2; --blue-50: #E7F5FF; --green-50: #EBFBEE;
  --ink: #0B0D10; --text: #2B2F36; --muted: #5F6672; --line: #E6E8EC; --bg-soft: #F6F8FA;
}
* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--text);
  font: 16px/1.7 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--line); background: #fff; }
.nav { display: flex; align-items: center; height: 68px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand .word { font-weight: 800; font-size: 21px; letter-spacing: -0.03em; color: var(--ink); }
.brand .word b { color: var(--green); } .brand .word i { color: var(--blue); font-style: normal; }
.nav a.back { margin-left: auto; color: var(--muted); text-decoration: none; font-weight: 500; font-size: 15px; }
.hero { background: radial-gradient(700px 260px at 90% -30%, var(--blue-50), transparent 60%),
  radial-gradient(600px 240px at 0% 0%, var(--green-50), transparent 60%); padding: 56px 0 28px; }
.kicker { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); margin: 0 0 8px; }
h1 { font-size: clamp(32px, 4.5vw, 46px); line-height: 1.08; letter-spacing: -0.03em; color: var(--ink); margin: 0 0 10px; font-weight: 800; }
.updated { color: var(--muted); font-size: 14px; margin: 0; }
article { max-width: 760px; padding: 28px 0 72px; }
.summary { background: var(--bg-soft); border: 1px solid var(--line); border-left: 4px solid var(--green); border-radius: 12px; padding: 18px 22px; margin: 0 0 28px; }
.summary h2 { margin-top: 0; font-size: 17px; }
.summary ul { margin: 6px 0 0; padding-left: 20px; }
h2 { font-size: 21px; letter-spacing: -0.02em; color: var(--ink); margin: 36px 0 8px; }
h3 { font-size: 17px; color: var(--ink); margin: 22px 0 4px; }
p, li { color: var(--text); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
footer { background: var(--ink); color: #8b94a1; padding: 32px 0; font-size: 14px; }
footer .row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
footer a { color: #c9ced6; text-decoration: none; margin-left: 18px; }
footer a.brand { margin-left: 0; }
footer .brand .word { color: #fff; font-size: 18px; }
footer .brand .word b { color: #69DB7C; } footer .brand .word i { color: #74C0FC; }
@media (max-width: 520px) { .nav a.back .full { display: none; } footer a { margin-left: 12px; } footer a.brand { margin-left: 0; } }
.nav a.back .m { display: none; } @media (max-width: 520px) { .nav a.back .m { display: inline; } }